Please see the latest update to this story: http://www.windowscentral.com/follow-windows-phone-tango-does-not-increase-multitasking-app-limit-eight
Now that the Tango ROM has been leaked onto XDA, those members are going over it with fine comb to find every little change. Guess what? There are more improvements then we knew about in Tango, making us want it even more.
For instance, we know that even devices with 256MB of RAM will have app-switching via the Back button (see our last podcast). But going further, instead of just the last five previous apps being held in memory, we now can have eight apps stored in memory which is sure to make everyone happy. While just adding three more apps does not seem a lot, in practice we imagine such an addition will be very practical for everyday use.
Other additions noted are increased memory efficiency with just 122MB of RAM being used in the 8773 build versus the current 153MB in 8107 found on most devices today. Finally, MMS delivery confirmation/acknowledgement is there as well. While that last part seems kind of "meh", we know from experience that sending MMS is hit or miss depending on your network, so having a confirmation can actually be a good thing here.